Single-nucleus, striated, branching cells
Multinucleated, non-striated, branching cells
Multinucleated, striated, long threadlike cells
A group of similar cells that perform a particular function is called a tissue.
There are different kinds of tissues in both plants and animals. In man, there are four major types of tissue.
1. Muscle tissue - made up of cell that are long and fibrous. The muscle cells are able to contract.
Answer: Single-nucleus, striated, branching cells
Explanation: Cardiac muscle cells are striated and branched with a single nucleus. They are joined end to end in complex networks.
Answer:
b
Explanation:
chitin helps build natural structures like exoskeletons and cell walls
isotonic
active transport
diffusion
Answer:
active transport
Explanation:
Active transport is the movement of substances against a concentration gradient or electrochemical gradient. The cell uses energy from ATP to move substances against a concentration or an electrochemical gradient. The active transport is carried out pumps or carrier proteins against electrochemical gradients. Thus, active transport would be most affected by a disorder that causes damage to carrier proteins.
crossing over occurs during the prophase I of meiosis, where homologous chromosomes pair up and exchange segments, contributing to genetic diversity in offspring.
The stage in meiosis where crossing over occurs is the prophase I. During this phase, the proteins associated with homologous chromosomes bring the pair close to each other, a process called synapsis.
The genes on the chromatids of the homologous chromosomes precisely align with each other, initiating an exchange of chromosome segments between non-sister homologous chromatids.
This exchange is known as crossing over, contributing greatly to genetic variation among organisms.
Following this process, the homologous chromosomes separate and distinct combinations of maternal and paternal chromosomes make their way into the gametes.
Learn more about crossing over here:
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